Yes, the same folks who brought you the Fox Box, the glow puck and an in-studio football field are about to transform baseball, or try to. Since its first broadcast less than two years ago, Fox Sports has left a sizable imprint on televised sports with innovative gimmicks, over-the-top commentary and a philosophy of fun with games. Started from scratch when Rupert Murdoch landed an N.F.L. television contract in 1993, Fox Sports has made imitators out of skeptics. But then the whole idea of a fourth network was once considered impossible.